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<1…19202122232425…34>
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ... into a
    xor c ; merge with 2nd value
    ld ...
    Kiwi Kiwi August 2006 Development
  • Bipboi Progress[b]UPDATED With Bip0708[/b] Hi, It's been a while since Micro Mart mentioned my game I've been working on, "Bipboi", and frankly it's been a while …

    ... putting the music to an interrupt so that it is constant ...
    robpearmain robpearmain August 2006 Development
  • Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…

    ... because that messes with the interrupt.
    Alcoholics Anonymous Alcoholics Anonymous August 2006 Development
  • Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…

    ... because that messes with the interrupt.[/QUOTE]
    True you do ... didn't care about the interrupt tho' as all it did ...
    icabod icabod August 2006 Development
  • Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…

    ... didn't care about the interrupt tho' as all it did ...
    Dr BEEP Dr BEEP August 2006 Development
  • z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…

    ... it relies on the Basic interrupt routine to scan the keyboard ... is only read once each interrupt and only a single keypress ... to stop running Basic's interrupt routine and use IM2, for ... . This is because Basic's interrupt routine scanned the keyboard and ...
    Alcoholics Anonymous Alcoholics Anonymous August 2006 Development
  • Bipboi Progress[b]UPDATED With Bip0708[/b] Hi, It's been a while since Micro Mart mentioned my game I've been working on, "Bipboi", and frankly it's been a while …

    Minor update

    Added splash screens and interrupt regulated music. Hopefully get more done over the weekend

    [url=http://www.peargames.co.uk/downloads/bip0708.zip]Click to Download demo bip0708.zip here[/url]
    robpearmain robpearmain September 2006 Development
  • TAP conversion project?I was wondering if there's any concerted effort to produce TAP versions of games only available in TZX or Z80/SNA/SLT format? Or are snapshots consid…

    ... RealSpectrum's debugger:

    MERGE "" the BASIC loader and you ...
    StuBruise StuBruise September 2006 Games
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... and things like return from interrupt are 6. I think the ...
    JamesD JamesD September 2006 Sinclair Miscellaneous
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... and things like return from interrupt are 6. I think the ...
    Spector Spector September 2006 Sinclair Miscellaneous
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... and things like return from interrupt are 6. I think the ...
    Matt_B Matt_B September 2006 Sinclair Miscellaneous
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... and things like return from interrupt are 6. I think the ...
    piters piters September 2006 Sinclair Miscellaneous
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... it is for creating custom interrupt lists that fire on specific ...
    AndyC AndyC September 2006 Sinclair Miscellaneous
  • What are people using TommyGun to do?So I was just wondering what people are using TommyGun to do?

    ... across all formats with an interrupt-driven player, although it wouldn ...
    Matt_B Matt_B September 2006 Development
  • How are people developing?Are most coding on actual HW or under emulation, or cross developing?

    ... BasIn (I use it to merge/renumber and several other tasks ...
    na_th_an na_th_an September 2006 Development
  • You know how the 128K was faster than the 48K Spectrum?Regarding how the Spectrum 128K ran at 3.54 MHz rather than the 48K's 3.5MHz, was this difference enough to be an advantage? If not, then surely Sinc…

    ... in 48K mode as the interrupt routine is simpler.

    Geoff Geoff September 2006 Hardware
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... liked to make. Polled or interrupt modes.

    * An ... a small buffer. Polled or interrupt modes.

    * All ... * Add adjustable ULA interrupt so that it could interrupt on a specific ... be synced with the ULA interrupt by some mechanism.
    ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Sinclair Miscellaneous
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... liked to make. Polled or interrupt modes.[/quote]
    I ... a small buffer. Polled or interrupt modes.

    * All ... Add adjustable ULA interrupt so that it could interrupt on a specific ... be synced with the ULA interrupt by some mechanism.[/quote]< ...
    JamesD JamesD October 2006 Sinclair Miscellaneous
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... you can program it to interrupt whereever (start of scan line ... easily reset it for another interrupt somewhere else in the same ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Sinclair Miscellaneous
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... you can program it to interrupt whereever (start of scan line ... easily reset it for another interrupt somewhere else in the same ...
    JamesD JamesD October 2006 Sinclair Miscellaneous
  • Games that are impossible to complete due to bugs!I'm trying to compile a list of Speccy games that cannot be completed because of a bug (or simply bad programming)! Here's a few... [B]Frankie Goes …

    ... ]
    It's because the interrupt table is being overwritten due ...
    Mr. Anonymous Mr. Anonymous October 2006 Games
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... will return just after an interrupt. Another thing you could do ... change. It changes when an interrupt has just occurred. Waiting for ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Sinclair Basic
  • Rst #38This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode…

    ... what's being executed by interrupt in IM 1 mode).
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Development
  • Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…

    ... at 1.76475MHz and the interrupt rate is 60Hz. For the ... are written assuming a 50Hz interrupt -- when played on a 2068 ... to throw away each sixth interrupt to reduce tempo and that ... it does not include the interrupt routine that must call the ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Games
  • Rst #38This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode…

    ... that it is called during interrupt means you and the ROM ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Development
  • The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…

    ... that sets up your own interrupt routine. This routine would check ... , and then call the BASIC interrupt (RST #38?).
    I'm ... .

    Setting up an interrupt is easy - you'll need ...
    icabod icabod November 2006 Sinclair Basic
  • Is there a way to implement that Gigascreen option of emulators on real speccy ?Well the topic sets my dummy question... Is there any hardware way to avoid that flickering on a typical RGB monitor or TV? ;) [ This Message was…

    ... screens (as Gasman said). Interface merge the screens into one TV ...
    ellvis ellvis November 2006 Sinclair Miscellaneous
  • The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…

    Yep, that's pretty much what I usually do.
    Actually, I usually just do "EI; RET" in my interrupt routines, but that doesn't really help here, hehe.
    icabod icabod November 2006 Sinclair Basic
  • The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…

    ... how to set up an interrupt service routine? Is it just ...
    na_th_an na_th_an November 2006 Sinclair Basic
  • The BASIC ISRFirst of all, excuse me if my blatant ignorance about this topic makes me write some nonsense :) The thing is that I'm finishing a game in mixed BAS…

    To set up an interrupt service routine you ... same value. When an interrupt occurs, it looks at ... 16-bit address of your interrupt routine... which is why ... , the address of your interrupt routine is at $fefe.< ... your table, and your interrupt routine, you then LD ...
    icabod icabod November 2006 Sinclair Basic
<1…19202122232425…34>

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